Home / 8,108.55-12,162.67-3,181.64

Finding the Fourth Proportional to 8,108.55, 12,162.67 and 3,181.64

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Solution

The fourth proportional to 8,108.55, 12,162.67 and 3,181.64 is: 4,772.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.55 : 12,162.67 = 3,181.64 : x
  2. Step 2: Convert to fraction form
    8,108.55/12,162.67 = 3,181.64/x
  3. Step 3: Cross multiply
    8,108.55x = 12,162.67 × 3,181.64
  4. Step 4: Simplify right side
    8,108.55x = 38,697,168.61
  5. Step 5: Solve for x
    x = 38,697,168.61/8,108.55
  6. Step 6: Final answer
    x = 4,772.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.